Damper



' J. KNICKERBOCKER.

Damp'en.

Patented July 11, 186-.

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Wz'Zwas 56 UNITED STATES PATENT OFFICE.

JOHN KNIGKERBOOKER, OF HARTFORD, CONNEOTIOTIT.

DAMPER.

Specification forming part of Letters Patent No. 48,695, dated July 11,1865.

To all whom it may concern:

Be it known thatI, JOHN KNICKERBOGKER, of the city and county ofHartfordand State of Connecticut, have invented certain new and usefulImprovements in Devices for Dampers and Radiators for Stove-Pipes, 850.;and I do hereby declare that the same is described and represented inthe following specification and drawings; and to enable others skilledin the art to make and use the same, I will proceed to describe itsconstruction by referring to the drawings, in which the same lettersindicate like parts in each of the figures, the nature of which will befully understood from the specification and drawings, the object ofwhich is to graduate the draft and radiate the greatestamount of heatfrom the stove or other heating apparatus into the apartments.

In the accompanying drawings, Figure l is a sectional elevation, showingthe mechanism in detail. Fig. 2 is a sectional elevation taken at rightangles with Fig. 1.

a is a cylindrical pipe, of any desirable size and shape.

b are radialingplates, provided with hinges e and hung upon afulcrum-pin, f, near the lower end of the section of pipe, so that whenthey are thrown open the lower ends will nearly closetogether in thecenter of the pipe and allow the heat to separate, and as it ascendstoexpend itself upon the surface of the pipe, and consequently a greateramount of heat will be radiated therefrom into the apartment.

0 is a damper 0f the ordinary construction, except that it is providedwith a stop, 61, and hingejointw, so as to preventits oscillating or toturn past the center. The shape of the plates b (see b, Fig. 2) shouldbe such as to nearly fit to the sides of the pipe, whether the pipe bemade round or other shape, except that the tending equal distance eachway therefrom, to

the ends of which I connect the upper ends of the plates 1) by means oflinks 13 and joints j, and from one end of the arm h to the joint as,near the outer edge of the damper 0, is formed "a connection by means ofthe arm 70.

The operation willbe seen by the red and dark lines. The red lines showthe device closed up, leaving passage open, while the dark lines showthe passage nearly closed. Thus I am enabled to check the draft more orless, as desirable, and to secure a greater amount of heat radiated fromthe pipe by the combined action of the damper and the radiating-plates.

I believe I have thus shown the nature, construction, and operation ofthis improvement so as to enable othersskilledin the art to make and usethe same therefrom.

What I claim,therefore, and desire to secure by Letters Patent, is

As a new improved article of manufacture, viz., the combination of theplates b with the damper c and adjusting-rod g, with their connections,substantially as and for the purpose described.

JOHN KNIOKERBOOKER. Witnesses:

JAMES KNIOKERBOCKER, JEREMY W. BLIss.

